Absolute methodIt
It determines the simple value of a measured quantity in the appropriate units, without the need to know its value in any special case (eg for a substance or body, or in a certain…
Basic quantities are measured very often and similarly to history.
A sophisticated system of interconnected units is used.
SI system
The International System of Units (from the French…
Systems of units
Basic quantities are measured very often and similarly to history. With the rise of physics, more and more demands are placed on units and their definitions, not only in terms of…